12-0.8(x-4)=0.4(9x-4)

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Solution for 12-0.8(x-4)=0.4(9x-4) equation:


Simplifying
12 + -0.8(x + -4) = 0.4(9x + -4)

Reorder the terms:
12 + -0.8(-4 + x) = 0.4(9x + -4)
12 + (-4 * -0.8 + x * -0.8) = 0.4(9x + -4)
12 + (3.2 + -0.8x) = 0.4(9x + -4)

Combine like terms: 12 + 3.2 = 15.2
15.2 + -0.8x = 0.4(9x + -4)

Reorder the terms:
15.2 + -0.8x = 0.4(-4 + 9x)
15.2 + -0.8x = (-4 * 0.4 + 9x * 0.4)
15.2 + -0.8x = (-1.6 + 3.6x)

Solving
15.2 + -0.8x = -1.6 + 3.6x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-3.6x' to each side of the equation.
15.2 + -0.8x + -3.6x = -1.6 + 3.6x + -3.6x

Combine like terms: -0.8x + -3.6x = -4.4x
15.2 + -4.4x = -1.6 + 3.6x + -3.6x

Combine like terms: 3.6x + -3.6x = 0.0
15.2 + -4.4x = -1.6 + 0.0
15.2 + -4.4x = -1.6

Add '-15.2' to each side of the equation.
15.2 + -15.2 + -4.4x = -1.6 + -15.2

Combine like terms: 15.2 + -15.2 = 0.0
0.0 + -4.4x = -1.6 + -15.2
-4.4x = -1.6 + -15.2

Combine like terms: -1.6 + -15.2 = -16.8
-4.4x = -16.8

Divide each side by '-4.4'.
x = 3.818181818

Simplifying
x = 3.818181818

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